I know the profile of my new foam door gasket, for 46 chevy pu, the groove goes up to get rain to run around and down,...but does the long vertical leg face the inside of the door edge or the cab opening? My truck had none to compare and I've found no answer in parts and rubber catalogs. (I suspect the long leg is to the inside door edge). I don't want to glue it on the wrong way. Can anyone help? Thanks!